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How do you know which are the TI-REF 83PLUSB/TA2 chips and which are the TI-REF 83PLUSB/TA2 chips?

Only by opening the calculators...

And you can't open your friend's calculator of course :biggrin:

My guess is:
* TI-84+(SE) manufactured by S with 1.00 boot code, have the TI-REF 83PLUSB/TA2
* TI-84+(SE) manufactured by S with 1.02 boot code, have the TI-REF 84PLUSB/TA3
* TI-84+(SE) manufactured by P with 1.02 boot code, have the TI-REF 84PLCR/TA1
(and for the 3 last days, I think I've been guessing quite well )

But it'll be very helpful too, if you report us some serial+test during "critic" periods.
The important think for the moment, is to determine more precisely "when" the changes did happen.

S-0607H FAIL (I tested this a few times to make sure)
P-0308K FAIL
K-0308J ???? Just another number for organizing purposes. But manufacterer K?

Still working on that other H, it also failed.

Very interesting information.

So the S-0607H did fail.
Maybe the S-factory sarted including the new TA1 chip, before production was transfered.
To be sure, it would be interesting to open that TI-84+, and look at the chip.

P-0308K did fail, that's coherent.

K-0308J did fail.
It's interesting to know there has been another manufacturer.
Note we have no TI-84+ manufactured between 06/2007 and 03/2008.
Maybe calculators manufactured during that period, comes from the K-factory.

Other tests for H-L revisions (2007-2008) are very welcome.(because that's where the problems are... to check other H-revisions... a L-revision did strangely pass the test too, serial unknown for now... to check if there are other calculators manufactured by K...)

Critor, we would have done nothing without you. Thanks for the big push!
===========================================
I checked the L that passed again. It did not. I mis-recorded it. Sorry
I was not able to "look at" my teacher's calc ( #8 ) today. Mabey tomorrow...
Here are the ones I tested.

For now, it seems that all TI-84+ made in the P-factory fails the extra-RAM test, and the S made H. There is also a K manufacture.

Note: There is an underscore before the K on #2. #2 also was bought in 07, yet is a "B" with a really low serial number. Wierd?
Also note: My calc (the first on this list) was already on the main table.

It just occurred to me: We don't have any "I"s.

Last edited by Guest on 05 Oct 2009 04:08:13 pm; edited 1 time in total

Critor, we would have done nothing without you. Thanks for the big push!
===========================================
I checked the L that passed again. It did not. I mis-recorded it. Sorry
I was not able to "look at" my teacher's calc ( #8 ) today. Mabey tomorrow...
Here are the ones I tested.

For now, it seems that all TI-84+ made in the P-factory fails the extra-RAM test, and the S made H. There is also a K manufacture.

Note: There is an underscore before the K on #2. #2 also was bought in 07, yet is a "B" with a really low serial number. Wierd?
Also note: My calc (the first on this list) was already on the main table.

Thanks!

I'm updating my table.

I couldn't find any information about a K-manufacturer (although it does exist).
Here is a small list of TI common manufacturer locations:

S-0607H FAIL (I tested this a few times to make sure)
P-0308K FAIL
K-0308J ???? Just another number for organizing purposes. But manufacterer K?

Still working on that other H, it also failed.

K-0308J did fail.

Sorry if I wrote it wrong but I did not have time to test the K-0308J so it is unknown (but probably a fail, I'll test tomorrow), I just was giving a time stamp sort of thing. But the K had an underscore before it and it was engraved and written in white.

Edit: I think I've seen an "I". But I may be wrong.

Last edited by Guest on 05 Oct 2009 04:39:22 pm; edited 1 time in total

By the way, the lettering on this K ( #2 ) is just like the other P's and S's.

Are you sure? Because those K's give really weird Revisions. A "B" long after it was produced, one with no letter also long after those were produced, and a letter "O". I think something is different with the K's.

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